JEGS thermal heat sleeving is designed to protect fuel lines, A/C lines, oil lines, heater hoses and electrical wiring from exhaust heat. Stable to 500°F. Features non-permeable heavy silicone jacketed fiberglass, highly flexible for tight radius curves and cuts cleanly with scissors. Resists gasoline, engine chemicals, moisture, cuts and abrasions. Completely non-conductive and will not melt, delaminate or become brittle under normal conditions. Halogen and asbestos free. RoHS (Restriction of Hazardous Substances) compliant.